Celeb Pix: Why is Bruce Willis all smiles?

Bruce Willis has wife Emma Heming by his side for the British premiere of "A Good Day to Die Hard" in London on February 7. Plus, former President Bill Clinton joins will.i.am for annual TRANS4M Day Conference; Whitney Houston becomes the first celebrity to have four wax figures released simultaneously by Madame Tussauds; actors and singers come together for the Ok! Magazine Pre-GRAMMY Party in Hollywood; and Matt Damon arrives at the Berlinale International Film Festival to promote "Promised Land."